參數(shù)資料
型號(hào)： PCM2702
英文描述： 16-Bit Stereo DIGITAL-TO-ANALOG CONVERTER with Interface
中文描述： 16位立體聲數(shù)字模擬轉(zhuǎn)換器的接口
文件頁(yè)數(shù)： 11/11頁(yè)
文件大小： 117K
代理商： PCM2702
11
PCM2702
Play, Stop, and Detach sequence
When host finishes or aborts audio playback, the PCM2702
will stop playing after the last transmitted audio data has
been received. Figure 6 shows the operation sequence for
play, stop, and detach.
PLYBCK, SSPND, AND ZERO FLAG
PLYBCK, SSPND, and Zero flag in Figures 4, 5, and 6 are
defined as follows.
PLYBCK
—while PCM audio input data is playing back,
PLYBCK (pin 10) is switched LOW.
Detach
1ms
4ms
23ms
(1024/f
S
)
SOF
SOF
SOF
SOF
SOF
SOF
Audio Data
Last Audio Data
Audio Data
V
BUS
D+/D–
PLYBCK
SSPND
ZERO
V
OUT
L
V
OUT
R
FIGURE 6. Play, Stop, and Detach.
SSPND
—upon detection of a suspend state on the USB port,
SSPND (pin 11) is switched LOW.
ZERO
—if the PCM audio input data is continuously zero
for 1024 sampling periods (1/f
S
), ZERO (pin12) is switched
to HIGH.
TEST PINS
The PCM2702 has four test pins—TEST0 (pin 16), TEST1
(pin 15), TEST2 (pin 14), and TEST3 (pin 13)—which are
used solely for testing at the factory. These pins must be
connected to a digital ground for proper operation.
XTI
V
DD
C
DGNDC
V
DD
DGND
D+
D–
V
BUS
DGNDU
PLYBCK
SSPND
ZERO
TEST3
TEST2
XTO
V
CC
P
AGNDP
V
CC
L
AGNDL
V
OUT
L
V
CC
V
COM
AGND
V
OUT
R
AGNDR
V
CC
R
TEST0
TEST1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PCM2702
R
2
R
3
R
4
X
12MHz
C
2
C
1
C
3
+3.3V
+5V
C
4
C
6
C
8
C
7
C
5
USB Series
“B” Connector
POST
LPF
L-Channel
POST
LPF
R-Channel
+
NOTE:
C
1
, C
: 10pF to 33pF (depending on Crystal Resonator);
C
3
,C
4
: 0.1
μ
F
1-100
μ
F
;
C
to C
: 0.1
μ
F Ceramic each and two
1
μ
F to 100
μ
F for 5V and 3.3V;
C
9
: 10
μ
F;
R
1
: 1.5k
; R
2
, R
3
: 22
; R
4
: 1M
;
X
1
: Crystal Resonator (fundamental mode, parallel resonant).
C
9
FIGURE 7. Typical Connection Diagram.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM2702E 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 16-Bit Stereo DAC w/USB Ifc RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM2702E 制造商:Texas Instruments 功能描述:SEMICONDUCTOR ((NW))
PCM2702E/2K 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 16-Bit Stereo DAC w/USB Ifc RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM2702E/2KG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 16-Bit Stereo DAC w/USB Ifc RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM2702EG 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 16-Bit Stereo DAC w/USB Ifc RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
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